External exception 80000101

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.4

Error message:
External exception 80000101

Stack trace:
(F7FA5079)WinSCP.exe
(0006CA52) ntdll.dll._alloca_probe
(0006D093) ntdll.dll._alloca_probe
(0006FE89) ntdll.dll.ZwRaiseException
(00070596) ntdll.dll

Status: all_insignificant

The problem happens rarely. I cannot reproduce it.